JP3509574B2 - Body support device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welfare medical device which requires a function of supporting a body, and includes a reclining chair, a stretcher for transportation, an operating table, which is used for bathing a physically handicapped person, a sick person and the like. The present invention relates to a body support device for various treatment chairs, barber chairs, beds for physically handicapped and sick people, etc., which facilitates the transfer of passengers and reduces the work load and fatigue of caregivers.

[0002]

2. Description of the Related Art In welfare medical equipment, a device for supporting the body of a cared person, a patient, a person to be examined, etc. is provided in order to carry out work such as transportation, care, treatment, and inspection on a cared person, a patient, and a patient. There are roughly two types of posture support systems for passengers, such as cared persons, patients, and examinees, who can be placed on these devices, which are a sitting posture and a supine posture. The sitting position, however, forces the occupant to maintain a cramped position, thus causing wasted muscle power. In addition, the occupant with weak muscles cannot maintain his / her posture and may slip off the device. On the other hand, the supine method has a drawback in that it leaves the operator in charge of care, treatment, inspection, etc., and reduces the independence of the passenger. In addition, when transferring to the device, the worker needs to assist to hold a passenger with a physical disability, which poses a problem that the muscular load of the worker is large.

In order to solve these problems, a device capable of changing the posture from a sitting position to a supine position has been developed. For example, a reclining chair for bathing (conventional method 1) used for bathing a physically handicapped person, a sick person, etc.
It is disclosed in Japanese Patent No. 335513. However, in the invention, the seat height in the supine posture is the height in the sitting posture,
Alternatively, a carer, an inspector who is fixed to the height of the patient bed and performs work such as cleaning, assistance, inspection, and treatment on the passenger.
There are problems that the seat height cannot be adjusted to be suitable for an operator such as a doctor and that the position of the upper half of the occupant's upper body moves significantly during posture deformation. Therefore, in the conventional body support device, the worker is forced to proceed with the work while greatly changing the posture and the position of the worker according to the posture change of the passenger. For example, a care trolley (conventional method 2) can be used to adjust the height of the passenger's seat.
As disclosed in Japanese Patent Laid-Open No. 38954/1998, the backrest portion which is horizontally integrated with the seat portion is moved up and down, and there is a drawback that the backrest portion cannot be tilted according to the seat height and posture of the occupant. Table 1 shows a comparison of the above methods.

[0004]

[Table 1]

[0005]

[Problems to be Solved by the Invention] It is possible to provide a passenger with a sitting posture at a seat height that is easy to sit down and a comfortable supine posture, and feel a fear when the posture is changed from a sitting posture to a supine posture. Don't let it feel. On the other hand, for workers who perform cleaning, assistance, inspection, treatment, etc. for passengers, we provide free height adjustment of the seat according to the height difference of the worker and the work contents. The target work position for cleaning, assistance, inspection, treatment, etc. is to keep the position movement as small as possible even if the posture change of the occupant occurs. Further, in order to solve these problems by the conventional technique, it is clear that a plurality of drive sources are required, which leads to an increase in size of the device and an increase in weight and manufacturing cost. The present invention, while suppressing the position movement of the upper body of the occupant as much as possible, continuously deform the posture from a sitting posture of a height suitable for the passenger to a supine posture of a height suitable for the worker, and in the supine posture. (EN) Provided is a body support device which enables a single drive source to adjust a height suitable for an operator while maintaining a suitable posture of a passenger.

[0006]

As a result of earnest research in view of the above, the present inventor has solved this problem by the following means. (1) Body support including a seat portion 1, a swingable backrest portion 2 and a backrest frame 20 arranged on the back portion, and a seat frame 3 having an extending portion 3 ′ behind the seat portion 1 for supporting the seat portion 1 In the device, a fulcrum a forming the same triangle,
A main rocker arm 13 and a follower rocker arm 14 provided with b, c and a ′, b ′, c ′, respectively, are arranged at front and rear at separate positions, and the fulcrums a and a ′ are fixed to the base 5 or this. The extended members are rotatably supported, and the fulcrums b and b ′ are rotatably supported on the rear extending portion 3 ′ of the seat frame 3 with a space therebetween, while the remaining fulcrums c and c ′ are connected rods. A seat portion 1 and a back portion 2 which are rotatably connected to each other at 15 to form a link mechanism, and further have an upper fulcrum 27 arranged on the main rocker arm pivotally supporting a tip of a piston rod for swinging the main rocker arm. 1. A body support device characterized in that a drive means for raising and lowering the seat is provided, and by swinging the main rocker arm 13, the seat portion 1 of the seat obtains a parallel movement that draws an arc to enable the up and down movement.

(2) A seat 1 having a seat 1 and a swingable backrest 2, a seat frame 3 having an extension 3'on the rear side for supporting the seat 1 of the seat, and a backrest 2 supported. A backrest frame 20, a drive means for allowing the seat frame 3 to move up and down, and an extension member extending from an upper portion of a fixed base 5 that comes into contact with the back position of the backrest 2 at a position independent of the lifting of the seat 1. 6 As the backrest portion 2 and the backrest frame 20 approach the horizontal position by swinging the first locking means 21 provided at the tip, the backrest frame 20 that comes into contact with the rearward extending portion 3'of the seat frame 3 is provided so as to project. Alternatively, the second locking means (9,
9 '), in the configuration in which the backrest 2 swing range limiting means for limiting the swing range of the backrest 2 is arranged,
While the seat is moving up and down, at a certain height, the backrest portion 2 is in a position independent of the lifting and lowering of the seat portion 1.
The seat back 1 and the backrest 2 are supported by the backrest 2 and the angle between the seatback 1 and the backrest 2 is variable.
Separates from the first locking means 21, and the second locking means (9,
9 ') is a body supporting device which is supported by 9') so that it can be moved up and down while holding a certain angle.

(3) By using the driving means according to claim 1 in which horizontal movement is added to the vertical movement of the seat, the upper end surface of the backrest portion 2 from the area where the backrest portion 2 and the first locking means 21 contact each other. The body support device according to (1) or (2), characterized in that the position movement of the portion up to the free end is reduced. (4) The link mechanism including the main drive rocker arm 13 and the follower rocker arm 14 is disposed on the lower left and right side surfaces of the seat portion 1, respectively (1) or (3). Body support device as described. (5) A seat having a seat portion 1 and a swingable backrest portion 2, a seat frame 3 having a rearward extending portion for supporting the seat portion 1 of the seat, a backrest frame 20 for supporting the backrest portion 2, When the seat portion 1 and the backrest portion 2 are lifted by the driving means that enables the seat frame 3 to move up and down, the seat portion 1
And a wide space opened forward is formed below the backrest 2 in the supine state (1) to (4).
A body support device according to any one of paragraphs. (6) The wheel X18 and the wheel Y19 are arranged on the rear bottom surface and the front bottom surface of the base 5, so that the entire apparatus can run. (1) to (5) The body support device according to. (7) The body support device is used by being fed into and used in a horizontal whole body shower bath device in which a large number of shower nozzles are arranged vertically and horizontally.
The body support device according to any one of (6).

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION First, an outline of an embodiment of a body supporting device of the present invention will be described below. The body support device includes a leg rest portion for supporting a body, a seat portion and a swingable backrest portion, and drive means for driving these.
A main body having a base for accommodating the drive means and having the same arbitrary triangular shape at the lower portions of both side surfaces of the body support device for changing the vertical movement of the seat surface and the angle formed by the seat portion and the backrest portion. A rocker arm and a follower rocker arm are arranged in parallel at arbitrary positions, and the drive rocker swings the main rocker arm to rotate the follower rocker arm. Is driven from the same plane as the seat portion, the center of rotation of the leg rest moves to the lower portion of the seat surface, and the leg rest can be folded to the lower portion of the seat surface. The link mechanism is composed of nodes, and the two link mechanisms are driven by the same driving means.

Further, the roller provided at the tip of the member extending from the upper portion of the base and the abutment member fixed to the lower portion of the backrest or the support member 9'fixed to the seat frame make it possible to maintain the height of the backrest constant. The roller makes the angle formed between the seat portion and the backrest variable, and at a height exceeding that, the backrest is supported by the abutment tool or the support tool and moves up and down while maintaining a constant angle. The fixed holding angle can be adjusted by an abutment member fixed to the lower part of the backrest or a support member fixed to the seat frame. The vertical movement of the seat and backrest is combined with the action of the roller and the abutment tool in the previous period due to the driving means with horizontal movement, and the movement of the passenger's head position is changed from the sitting position to the supine position as much as possible. Can be made. From the above, it is possible to reduce the size, weight, and manufacturing cost with one drive source, and work from a sitting posture with a height suitable for the passenger while suppressing the position movement of the upper body of the passenger as much as possible. Provided is a body support device capable of continuously changing the posture up to a supine posture of a height suitable for a rider, and adjusting the posture to a suitable height for an operator while maintaining a suitable posture of a passenger in the supine posture. To do.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a detailed description of the structure and operation of the body supporting apparatus of the present invention when applied to a stretcher for shower bathing, with reference to the drawings. 1 is an external perspective view of a stretcher of the present invention, FIG. 2 is a whole body shower bath device into which the stretcher is fed, and FIG. 3 is a front view of a sitting position.
4 is a front view of an inclined position, FIG. 5 is a front view of a horizontal position, FIG. 6 is an enlarged front view of FIG. 5, FIG. 7 is a plan view of FIG. 6, FIG. 8 is a right side view of FIG. 6, and FIG. 10 is a comparative explanatory view of the supporting means (a) and (b), and FIG. 10 is a comparative explanatory view of the driving means (c) and (d).
FIG. 11 is a diagram for explaining the operation of the driving means (e), (f), and (g) of the present invention, FIG. 12 is a backrest angle and seat surface and eye height graph, and FIG. 13 is a drive cylinder stroke and seat surface height graph. Table 1 is a comparison table of the method of the present invention and the conventional method. 1 to 11, 1 is a seat portion, 2 is a backrest portion, 3 is a seat frame, 4 is driving means, 5 is a base, 6 is a member, 7 is an angle 7, 8 is an angle 8 and 9 is abutting. Tool, 9'is support tool, 10
Is linear motion, 10 'is circular motion, 11, 11' and 1
1 "is near the contact portion of the roller 21 in the sitting posture of the backrest,
12, 12 'and 12 "are free ends of the backrest, 13 is a main rocker arm, 14 is a follower rocker arm, 15
Is a rod, 16 is a driving cylinder, 17 is an arc, 18 is a wheel X, 19 is a wheel Y, 20 is a backrest frame, 21 is a roller, 23 is a spring, 24 is a leg rest, 25 is a rotation center, and 26 is a lower fulcrum. , 27 is an upper fulcrum, 28 is a whole body shower bath device, 29 is a bather, 30 is a shower nozzle, 1
00 indicates a stretcher, respectively.

As shown in FIG. 2, the stretcher 10
0 is a wheel Y (such as casters) 19 and a wheel X1 on the base 5.
It is characterized in that it is possible to travel by attaching 8 and to form a space portion open to the front below the seat portion 1 and the backrest portion 2. After the stretcher is fed into the whole body shower bath device 28 using this space, the height of the supine posture is adjusted, and the shower nozzle 30 is attached to the whole body shower bath device 28 from the bather. It is possible to spray a shower on the buttocks, the back and the whole of the 29. 1 and 3 to 11, a seat having a seat portion 1 and a swingable backrest portion 2 in order to provide a sitting posture that allows easy sitting and a comfortable supine posture that allows height adjustment of a passenger. A seat frame 3 for supporting the seat portion 1 of the seat, and the seat frame 3
An arbitrary driving means 4 for raising and lowering the seat 1, a position independent of the raising and lowering of the seat 1 such as the base 5 or the member 6 extending therefrom, and a position following the raising and lowering of the seat 1 such as the backrest frame 20. Two supporting means such as a roller 21 which is a supporting means for restricting the swinging of the backrest portion 2 and an abutment tool 9 (may be the supporting tool 9'in FIG. 9 or 11) are arranged at a position, 11, a driving rocker arm 13 and a driven rocker arm 14 provided with fulcrums a, b, c and a ′, b ′, c ′ forming arbitrary identical triangles are arranged in parallel at arbitrary distant positions. Then, the fulcrums a and a ′ are rotatably held on the base 5 or a member 6 extending therefrom, and the fulcrums b and b ′ are rotatably connected to each other by a part of the seat frame 3 and the remaining fulcrum c And c ′ are also rotatably connected to each other by a rod 15 By configuring a link mechanism and swinging the driving rocker arm 13 by expanding and contracting the drive cylinder 16 or rotating the electric motor and the speed reducer,
The swing causes the driven rocker arm 14 to follow through the rod 15 and the seat frame 3, so that the seat portion 1 of the seat has an arc 1.
Measures have been taken to enable the drive means to obtain a parallel movement that draws 7. The relationship between the above drive cylinder and seat seat is
In FIG. 13, a graph of the drive cylinder stroke and the seat height is shown.

While the seat moves up and down, a constant height h3
Up to (FIG. 9), the backrest portion 2 is supported by the roller 21 which is positioned independently of the elevation of the seat portion 1, and the angle 7 formed by the seat portion 1 and the backrest portion 2 is made variable (FIG. 9A). , And at a height h4 that exceeds that, the backrest 2 has rollers 21
9 ', which is positioned away from the seat 1 to follow the elevation of the seat 1.
A means for raising and lowering while being supported by (abutment tool 9) and holding a constant angle 8 (FIG. 9B) is used.

Next, in order to solve the problem of eliminating the fear due to the deformation of the occupant's posture and reducing the position movement of the upper half of the occupant's body due to the deformation of the occupant, in FIG.
The horizontal movement of the seat allows the seat 10 to move linearly 10 to move forward when moving up and backward when moving down, or to move the seat 1 in an arcuate path 10 'that draws an arcuate trajectory in conjunction with lifting. Around the area where the supporting means roller 21 of the backrest comes into contact by using the driving means to which movement is added.
The position movement (11 → 11 ′ → 11 ″, 12 → 12 ′ → 12 ″) of the portion from 1 to the free end 12 of the backrest was suppressed as small as possible. The above-mentioned state is shown in the backrest angle and the seat surface and eye height graph in FIG.

The detailed construction and operation of the shower bath stretcher will be described below. In FIG. 4, (1) Wheels X18 are arranged at the rear of the base 5 and wheels Y19 are arranged at the front. In FIG. 11, (2) a main rocker arm 13 and a follower rocker arm 14 provided with fulcrums a, b, c and a ′, b ′, c ′ forming an arbitrary same triangle are separated by arbitrary positions. Place parallel to. (3) The fulcrum a of the driving rocker arm 13 is rotatably supported on the base 5, and the fulcrum a ′ of the driven rocker arm 14 is rotatably supported on the member 6 extending from the upper portion of the base 5. (4) The fulcrum b of the driving rocker arm 13 and the fulcrum b ′ of the driven rocker arm 14 are rotatably connected to each other by the seat frame 3. (5) The fulcrum c of the driving rocker arm 13 and the fulcrum c ′ of the driven rocker arm 14 are rotatably connected to each other by the rod 15. (6) The drive cylinder 16 is rotatably connected to the lower fulcrum 26, one end of which is at the bottom of the base 5, and the other end is an upper fulcrum 27, which is located in the middle of the driving rocker arm 13.

In FIG. 5, (7) When the drive cylinder 16 is extended, the driving rocker arm 13 swings clockwise, and the driven rocker arm 14 serving as a driven joint also follows in the same direction, so that the driving rocker arm 13 moves.
And the seat frame 3 connected to the driven rocker arm 14
However, it rises while moving in parallel with the seat portion 1 in the forward direction. In FIG. 3, (8) When the drive cylinder 16 is contracted, the driving rocker arm 13 swings counterclockwise, and the driven rocker arm 14 serving as a driven joint also follows in the same direction, so that the driving rocker arm 13
And the seat frame 3 connected to the driven rocker arm 14
However, it descends while moving in parallel with the seat portion 1 in the rear direction. (9) One end of the backrest frame 20 is rotatably connected to the seat frame 3 so that the backrest frame 20 on which the backrest portion 2 is placed can swing relative to the seat portion 1 from a horizontal state to a standing state. (10) The roller 21 is arranged at the tip of the member 6 extending from the upper portion of the base 5 so that the backrest frame 20 is in the upright state when in the sitting position and the backrest frame 20 is in the horizontal state when in the horizontal supine position. Then, the backrest frame 20 is supported by the rollers 21.

In FIG. 5, (11) an abutment tool 9 (which may be a support tool 9'fixed to the seat frame 3) for supporting a suitable backrest inclination of a supine person is arranged below the backrest frame 20. In FIG. 3, (12) the backrest frame 20, which is in an upright state at the lowest height of the seat portion 1, is supported by the roller 21 and its inclination gradually becomes gentle in association with the rise of the seat portion 1. In FIGS. 4 and 5, (13) the backrest frame 20 having a gradual gradual inclination in conjunction with the rise of the seat portion 1 is supported by the roller 21, and at the same time, the seat frame 3 is also supported by the abutment tool 9. When the height of the seat portion to be supported is exceeded, the inclination change of the backrest portion 2 associated with the rise of the seat portion 1 is stopped, and the backrest frame 20 is supported solely by the seat frame 3 via the abutment tool 9. Therefore, the inclination of the backrest 2 becomes constant up to the maximum height of the seat. (14) At this time, the constant inclination angle of the backrest 2 is adjusted by adjusting the abutment tool 9 so that the occupant has the most comfortable angle. FIG. 5 shows the case where the constant inclination angle is 0 degree. (15) The seat 1 is lowered from the maximum height, and the backrest 2
The seat back frame 20 is supported by the seat frame 3 alone via the abutment tool 9 at the seat height where the roller 21 is also supported, and the inclination of the seat back part 2 is maintained at a constant angle.

3 and 4, (16) When the backrest frame 20 is supported by the seat frame 3 via the abutment tool 9, and at the same time the seat portion 1 is lowered from the seat height supported by the roller 21 as well. The backrest frame 20 is supported by the rollers 21 alone, and the inclination of the backrest portion 2 gradually becomes steep to the minimum height in association with the lowering of the seat portion 1. (17) A spring 23 is arranged between the backrest frame 20 and the driven rocker arm 14 so that the backrest portion 2 does not fall toward the seated person. (18) The leg rest 24 constitutes a rotary link mechanism including a sliding pair that interlocks with the backrest frame 20. Figure 3
In FIG. 5, (19) If the backrest 2 is in the horizontal supine position, the leg rest 24 is horizontal, and if the backrest 2 is tilted, the leg rest 2 is
4 tilts while its rotation center 25 moves below the seat 1. Furthermore, the leg rest 24 is folded under the seat 1 so as not to interfere with the movement of the seated person when the seated posture is achieved. In FIGS. 4 and 5, (20) the leg rest portion 24 folded under the seat portion 1 in the sitting posture is the backrest frame 20 according to the rise of the seat portion 1.
In conjunction with the gradual inclination of the leg rest portion 24, the leg rest portion 24 follows the clockwise direction while the rotation center 25 thereof moves from below the seat portion 1 to the front. Further, when the inclination of the backrest frame 20 becomes gentle, the leg rest 24 is completely protruded from the lower part of the seat portion 1 and the inclination angle becomes gentle, and when the backrest frame 20 becomes horizontal, the leg rest 24 becomes horizontal. Become.

The features of the device of the present invention described above are summarized in Table 1 in comparison with the conventional system. As can be seen from Table 1, in the method of the present invention, all items are marked with ◯ (possible), but in the conventional methods 1 and 2, both are marked with ◯.

[0020]

According to the present invention, the following effects are exhibited. 1. According to the invention of claim 1 of the present application, it is possible to easily raise and lower the seat portion of the occupant and adjust the posture deformation, and to continuously change the posture from the sitting posture at the knee height of the occupant to the supine posture. , For example, a cared person or patient with a physical disability can be transferred to this device with or without the assistance of one worker, which is a great effect on the labor and labor saving of the worker. In addition, passengers can improve their motivation for independence by making efforts to transfer by themselves. Furthermore, since the structure is simple and the number of drive sources is small, it is possible to contribute to downsizing and weight saving of the body supporting device and reduction of manufacturing cost.

2. According to the invention of claim 2 of the present application, at the time of shifting to the supine posture, since the backrest can be lifted and lowered while being held at a constant angle, it is possible to provide a comfortable posture to the occupant, and to perform treatment, inspection, and cleaning. Since the seat height and the backrest angle suitable for the worker can be freely obtained according to the height difference and the work content of the worker who performs the work, the physical fatigue of the worker can be reduced. 3. According to the invention of claim 3 of the present application, since the position movement of the head can be reduced during the posture change of the occupant from the sitting posture to the supine posture, the fear of the occupant accompanying the rocking of the semicircular canal is reduced. You can eliminate the feeling. Also, if there is a work target position such as cleaning, treatment, or inspection on the upper body of the passenger, the movement of the work target position is small even if the posture change of the passenger occurs, so that the posture and position of the worker are not so much. A very suitable working environment can be obtained without any change.

4. According to the fourth and fifth aspects of the present invention, the seat portion and the backrest portion can be stably and reliably moved up and down, and a wide space portion is formed below the seat portion and the backrest portion. It becomes possible to deliver to a whole body shower bath device or the like in which a large number of shower nozzles are installed, and it is possible to inject the shower to the buttocks and back of the bather from the shower nozzle attached to the bottom of the whole body shower bath device. . 5. According to the invention of claim 6 of the present application, the wheel is provided on the rear bottom surface of the base, and the wheel having a rotatable mounting shaft is provided on the front bottom surface, which is convenient when the apparatus is moved or transported. 6. According to the invention of claim 7 of the present application, after the body supporting device is fed into the whole body shower bath device, the height of the supine posture of the body supporting device is adjusted and the shower nozzle and the proper position of the body of the bather are easily matched. It is possible to

[Brief description of drawings]

FIG. 1 is an external perspective view of a body support device of the present invention.

[FIG. 2] A whole body shower bath device in which a stretcher is fed.

FIG. 3 is a front view of a sitting position.

FIG. 4 is a front view of a tilted position.

FIG. 5 is a front view of a horizontal position.

6 is an enlarged front view of FIG.

FIG. 7 is a plan view of FIG.

FIG. 8 is a right side view of FIG.

FIG. 9 is a comparative explanatory view of the supporting means (a) and (b) of the present invention.

FIG. 10 is a comparative explanatory diagram of driving means (c) and (d).

FIG. 11 is an operation explanatory view of driving means (e), (f) and (g) of the present invention.

FIG. 12 is a graph of a backrest angle and a seat surface and eye height.

FIG. 13 is a graph of driving cylinder stroke and seat height.

[Explanation of symbols]

1: Seat part 2: Back part 3: Seat frame 4: Driving means 5: Base 6: Member 7: Angle 7 8: Angle 8 9: Abutment tool 9 ': Support tool 10: Linear motion 10': Arc motion 11, 11 ', 11 ": Roller 2 when sitting on the backrest
1 Near the contact portion 12, 12 ', 12 ": Free end of the backrest portion 13: Driving rocker arm 14: Driven rocker arm 15: Rod 16: Driving cylinder 17: Arc 18: Wheel X 19: Wheel Y 20: Backrest frame 21 : Roller 22: Missing number 23: Spring 24: Leg rest 25: Center of rotation 26: Lower fulcrum 27: Upper fulcrum 28: Whole body shower bath 29: Bather 30: Shower nozzle

Continuation of the front page (56) Reference JP-A-6-154269 (JP, A) JP-A-9-117343 (JP, A) JP-A-8-243140 (JP, A) JP-A-9-56752 (JP , A) JP-A-9-285502 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61G 1/00-5/04 A61H 33/00

Claims (7)

(57) [Claims] 1. A seat portion (1), a swingable backrest portion (2), and a backrest frame (20) arranged on the back portion (2), and a seat frame (3) having a back portion (3 ') for supporting the seat portion (1). In the body-supporting device, a main rocker arm 13 and a follower rocker arm 14 provided with fulcrums a, b, c and a ′, b ′, c ′ that form the same triangle are arranged in front and rear at separate positions, The fulcrums a and a ′ are rotatably supported on a fixed base 5 or a member extending therefrom, and the fulcrums b and b ′ are rotatably provided at a rear extending portion 3 ′ of the seat frame 3 with a space therebetween. Fulcrum c
And c ′ are rotatably connected to each other by a connecting rod 15 to form a link mechanism, and a seat formed by pivotally supporting a tip end of a piston rod for swinging the main rocker arm at an upper fulcrum 27 arranged on the main rocker arm. A drive means for raising and lowering the portion 1 and the backrest portion 2 is provided, and the driving rocker arm 1
A body supporting device characterized in that the seat portion (1) of the seat obtains a parallel movement that draws an arc by allowing the seat (3) to swing so as to be able to move up and down. 2. A seat having a seat 1 and a swingable backrest 2, and a rearwardly extending portion 3'for supporting the seat 1 of the seat.
A seat frame 3, a backrest frame 20 for supporting the backrest 2, a drive means for raising and lowering the seat frame 3, and a position independent of the raising and lowering of the seat 1, and contacting the back position of the backrest 2. As the backrest portion 2 and the backrest frame 20 approach horizontally by swinging, the first locking means 21 provided at the tip of the extension member 6 extending from the upper portion of the fixed base 5, the seat frame 3 extends rearward. The swinging range of the backrest portion 2 is limited by the second locking means (9, 9 ') protruding from the backrest frame 20 that comes into contact with the portion 3'or protruding from the rearward extending portion 3'of the seat frame 3. Backrest part 2
In the structure in which the rocking range limiting means is arranged, the backrest portion 2 is fixed to the seat portion 1 at a certain height while the seat is being raised and lowered.
Is supported by the first locking means 21 which is independent of the vertical movement of the seat, and the angle formed by the seat portion 1 and the backrest portion 2 is made variable,
At a height higher than that, the backrest 2 leaves the first locking means 21 and is supported by the second locking means (9, 9 ') so that the backrest 2 can be moved up and down while maintaining a certain angle. Characterized body support device. 3. By using the driving means according to claim 1 in which horizontal movement is added to the lifting movement of the seat, the upper end surface of the backrest portion 2 is free from the area where the backrest portion 2 and the first locking means 21 contact each other. The body support device according to claim 1 or 2, wherein the positional movement of the portion up to the end is reduced. 4. The link mechanism including the main drive rocker arm 13 and the follower rocker arm 14 is arranged at the lower left and right side surfaces of the seat portion 1, respectively. Body support device. 5. A seat having a seat portion 1 and a swingable backrest portion 2, a seat frame 3 having a rearward extending portion for supporting the seat portion 1 of the seat, and a backrest frame 20 for supporting the backrest portion 2. When the seat portion 1 and the backrest portion 2 are lifted by the driving means capable of raising and lowering the seat frame 3, a wide space portion opened forward is provided below the seat portion 1 and the backrest portion 2 in the supine state. It is formed, The claim 1 characterized by the above-mentioned.
4. The body support device according to any one of 4 above. 6. A wheel X1 on the rear bottom surface of the base 5 and on the front bottom surface.
8. The body supporting device according to claim 1, wherein the device and the wheel Y19 are arranged so that the whole device can run. 7. The body support device is used by being fed into and used in a horizontal whole body shower bath device in which a large number of shower nozzles are arranged in the vertical and horizontal directions. The body support device according to claim 1.